Snoqualmie Pass (WA)
December
Weather in Snoqualmie Pass, Washington for December 2026
Your guide to Snoqualmie Pass weather in December - trends and predictions
Expect heavy snowfall in Snoqualmie Pass during December, with an average of 19 snowy days.
In general, the average temperature in Snoqualmie Pass at the beginning of December is 2 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 0.4 °C by the end of December.
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Snow Forecast ❄️
Temperatures
More
9
Dry days
3
Rainy days
19
Snow days
3°/-2°
Temperatures
15 km/h
Avg max wind
91 %
Avg humidity
Snoqualmie Pass Weather December
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Temperatures trend during December in Snoqualmie Pass
See the weather trend as well as the moving average line
December weather in Snoqualmie Pass day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 4° /-1° | 0 mm | 0 cm | |
| Dec. 2 |  Heavy snow | 0° /-3° | 23.2 mm | 14.8 cm | |
| Dec. 3 |  Freezing fog | 1° /-5° | 0 mm | 0 cm | |
| Dec. 4 | Heavy snow | 1° /-1° | 45.5 mm | 31.6 cm | |
| Dec. 5 |  Light rain shower | 4° /1° | 98 mm | 13.7 cm | |
| Dec. 6 | Heavy snow | 1° /0° | 70.1 mm | 20.1 cm | |
| Dec. 7 | Freezing fog | 3° /0° | 0 mm | 0 cm | |
| Dec. 8 |  Moderate or heavy sleet | 5° /1° | 178.5 mm | 0 cm | |
| Dec. 9 | Heavy snow | 5° /0° | 141.8 mm | 43.7 cm | |
| Dec. 10 | Moderate or heavy sleet | 6° /1° | 297.6 mm | 49.1 cm | |
| Dec. 11 | Heavy snow | 7° /0° | 109.8 mm | 3.5 cm | |
| Dec. 12 |  Moderate rain at times | 5° /2° | 18.6 mm | 4.1 cm | |
| Dec. 13 |  Mist | 8° /2° | 0 mm | 0 cm | |
| Dec. 14 | Fog | 6° /4° | 0 mm | 0 cm | |
| Dec. 15 |  Heavy rain at times | 8° /1° | 17 mm | 0 cm | |
| Dec. 16 | Heavy snow | 3° /1° | 82.1 mm | 59.3 cm | |
| Dec. 17 | Heavy snow | 4° /-1° | 101.3 mm | 17.6 cm | |
| Dec. 18 | Heavy snow | 4° /-1° | 95 mm | 50.4 cm | |
| Dec. 19 |  Moderate snow | 0° /-4° | 41.7 mm | 28.9 cm | |
| Dec. 20 |  Moderate or heavy snow showers | 0° /-3° | 46.3 mm | 33.5 cm | |
| Dec. 21 | Freezing fog | 1° /-5° | 4.8 mm | 0 cm | |
| Dec. 22 | Mist | 0° /-3° | 6.7 mm | 4.8 cm | |
| Dec. 23 | Overcast | 0° /-2° | 8.1 mm | 5.8 cm | |
| Dec. 24 | Moderate or heavy rain shower | 2° /-2° | 10 mm | 4.2 cm | |
| Dec. 25 | Moderate or heavy snow showers | 1° /-3° | 19.2 mm | 13.9 cm | |
| Dec. 26 |  Blowing snow | 0° /-6° | 36 mm | 11.7 cm | |
| Dec. 27 | Moderate snow | -4° /-6° | 31.2 mm | 11.6 cm | |
| Dec. 28 | Mist | -1° /-7° | 0 mm | 0 cm | |
| Dec. 29 | Mist | 2° /-5° | 0 mm | 0 cm | |
| Dec. 30 | Overcast | 1° /-3° | 0 mm | 0 cm | |
| Dec. 31 |  Partly cloudy | 4° /-4° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Snoqualmie Pass in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Snoqualmie Pass forecast closer to your planned date for the most up-to-date weather information.
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Snoqualmie Pass in December - FAQ
What are the expected maximum and minimum temperatures in Snoqualmie Pass during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Snoqualmie Pass during December?
Significant rainfall exceeding 1482.5 mm is expected in Snoqualmie Pass during December, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Snoqualmie Pass in December 2026?
Snoqualmie Pass experiences an average snowfall of 422.3 cm during December, occurring over 19 days.
What are the typical wind conditions in Snoqualmie Pass during December?
The average wind speed in Snoqualmie Pass during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
Snoqualmie Pass snow forecast December 2026
Track daily snowfall levels and discover Snoqualmie Pass’s snowy potential this December ❄️
On average, Snoqualmie Pass sees 19 snowy days during December, with approximately 422.3 cm of total snowfall.
December rainfall patterns in Snoqualmie Pass
Explore the daily rainfall trends and prepare for Snoqualmie Passs December weather 💧
Typically, Snoqualmie Pass has 3 rainy days in December with a total of 1482.5 mm of rainfall.
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Where is Snoqualmie Pass?Get accurate weather forecasts for Snoqualmie Pass, located at latitude 47.392 and longitude -121.4. Stay updated with localized weather information tailored for Snoqualmie Pass.
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